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Michael Ertmer

Green Lake WI
Better Homes and Gardens Real Estate Special Properties
99 Closed Sales
$51.8M Total Value
$20K - $2.2M Price Range
$523K Average Price
Prior five years

About Michael

Meet Mike Ertmer

Real Estate Broker | Better Homes and Gardens Real Estate Special Properties

Mike’s journey into real estate started long before he sold his first home. With a background in the travel industry dating back to 2004, sales and client relationships have always been at the core of his career. After years in travel marketing and technology—living in cities like Milwaukee, Appleton, and Berkeley—he eventually found his way to Green Lake in 2017. It didn’t take long for him to realize he was home.

For Mike, real estate is all about connection—matching people with homes and communities that fit their lifestyle and dreams. Whether he’s helping buyers find their perfect lakefront getaway or guiding sellers through passing their property to the next generation, Mike brings energy, strategy, and genuine care to every transaction.

Each day in real estate brings something new—new people, new challenges, new stories. That’s what keeps Mike inspired. He’s proud to represent some of Green Lake’s most remarkable homes and is deeply invested in the community. As a member of the Green Lake Chamber Board of Directors and a familiar face at local events, Mike’s passion for Green Lake goes far beyond the business.

When he’s not working, you’ll likely find him at the gym, on the boat, or out on the golf course. A traveler at heart, Mike loves exploring new destinations—especially when it means reconnecting with friends in places like Florida or California. But no matter where he goes, Green Lake will always be home base.
Home Types: House, Lot/Land, Commercial, Townhouse, Condo
Years of Experience: 7

Transaction History

Seller Deals

Total Deals
18
Total Value
$11,727,866
Average Sale Price
$651,548
Price Range
$54K - $2M

Buyer Deals

Total Deals
10
Total Value
$3,398,900
Average Sale Price
$339,890
Price Range
$59K - $968K

Production Over Time

1 Year View by Quarter

Seller Deals

Total Deals
30
Total Value
$20,256,866
Average Sale Price
$675,229
Price Range
$54K - $2.2M

Buyer Deals

Total Deals
19
Total Value
$7,937,150
Average Sale Price
$417,745
Price Range
$59K - $1M

Production Over Time

2 Year View by Quarter

Seller Deals

Total Deals
59
Total Value
$31,019,266
Average Sale Price
$525,750
Price Range
$20K - $2.2M

Buyer Deals

Total Deals
40
Total Value
$20,758,840
Average Sale Price
$518,971
Price Range
$23K - $2.2M

Production Over Time

5 Year View

Michael's Listings and Deals

Awards and Designations

  • NAR - National Association of Realtors
  • ABR - Accredited Buyer Representative

Other Experience

First Time Home Buyers, Investments, Luxury Homes, New Construction
Agent License: Wisconsin #5925590
Agent Photo

Michael Ertmer

(920) 744-3801
(920) 744-3801

Homes for Sale by City